Developer open-sources Kleinanzeigen's full 634-category tree after reverse-engineering it

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A developer reverse-engineered the complete category structure of Kleinanzeigen.de, Germany's largest classifieds platform, after finding no public API or category reference existed. The tree spans 634 categories across three levels — 15 top-level, 143 second-level, and 476 third-level — each mapped with numeric or slug-based IDs. The dataset was compiled while building a tool called AnzeigenBoost and has now been released on GitHub under the MIT licence. The repository includes a full hierarchical tree, a flat names-only version, and a lookup code example. Contributors are welcome, as the maintainer acknowledges categories may shift over time as Kleinanzeigen updates its platform.

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